<template>
  <div class="login-container">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on"
      label-position="left">

      <div class="title-container">
        <h3 class="title">
          <img src="@/assets/common/login-logo.png" alt="">
        </h3>
      </div>

      <el-form-item prop="mobile">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input ref="username" v-model="loginForm.mobile" placeholder="请输入账号" name="username" type="text" focus="true"
          tabindex="1" auto-complete="on" />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input :key="passwordType" ref="password" v-model="loginForm.password" :type="passwordType"
          placeholder="请输入密码" name="password" tabindex="2" auto-complete="on" @keyup.enter.native="handleLogin" />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <el-button :loading="loading" type="primary" style="width:100%;margin-bottom:10px;" class="login_btn"
        @click.native.prevent="handleLogin">登录</el-button>

      <div class="tips">
        <span style="margin-right:20px;">
          <a href="#">注册账号</a>
        </span>
        <span>
          <a href="#">忘记密码？</a>
        </span>
      </div>

    </el-form>
  </div>
</template>

<script>
  // 引入表单校验规则
  import { validaMobile, validPassword } from '@/utils/validate'
  import { mapActions, mapState } from 'vuex'

  export default {
    name: 'Login',
    data () {
      const validateMobile = (rule, value, callback) => {
        if (!validaMobile(value)) {
          callback(new Error('手机号格式错误'))
        } else {
          callback()
        }
      }
      const validatePassword = (rule, value, callback) => {
        /*  这个是对的，但是项目密码不行 
          else if (!validPassword(value)) {
          callback(new Error('密码必须包含大小写字母和数字'))
        } */
        if (value.length < 6) {
          callback(new Error('密码长度不能小于六位'))
        }
        else {
          callback()
        }
      }
      return {
        loginForm: {
          mobile: '13800000003',
          password: '123456'
        },
        loginRules: {
          mobile: [{ required: true, trigger: 'blur', message: '账号不能为空' },
          { validator: validateMobile, trigger: 'blur' }
          ],
          password: [{ required: true, trigger: 'blur', validator: validatePassword }]
        },
        loading: false,
        passwordType: 'password',
        redirect: undefined
      }
    },
    watch: {
      $route: {
        handler: function (route) {
          // 监视路由变化，登录是有地址时使用自带地址
          this.redirect = route.query && route.query.redirect
        },
        immediate: true
      }
    },
    methods: {
      ...mapActions(['user/login']),
      // 显示与隐藏密码
      showPwd () {
        if (this.passwordType === 'password') {
          this.passwordType = ''
        } else {
          this.passwordType = 'password'
        }
        this.$nextTick(() => {
          this.$refs.password.focus()
        })
      },
      // 点击登录
      handleLogin () {
        // 首先校验表单
        this.$refs.loginForm.validate(async is_ok => {
          if (is_ok) {
            try {
              this.loading = true
              await this['user/login'](this.loginForm)
              this.$message.success('登录成功')
              this.$router.push({ path: this.redirect || '/' })
            } catch (err) {
              console.log('发生错误了' + err)
            } finally {
              this.loading = false
            }
          } else {
            console.log('error submit!!')
            return false
          }
        })
      }
    }
  }
</script>

<style lang="scss">
  /* 修复input 背景不协调 和光标变色 */
  /* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

  $bg: #283443;
  $light_gray: #68b0fe;
  //输入框光标颜色
  $cursor: #000;

  @supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
    .login-container .el-input input {
      color: $cursor;
    }
  }

  /* reset element-ui css */
  .login-container {
    background-image: url("~@/assets/common/login.jpg");
    background-position: center;

    .el-input {
      display: inline-block;
      height: 47px;
      width: 85%;

      input {
        background: transparent;
        border: 0px;
        -webkit-appearance: none;
        border-radius: 0px;
        padding: 12px 5px 12px 15px;
        color: $light_gray;
        height: 47px;
        caret-color: $cursor;

        &:-webkit-autofill {
          box-shadow: 0 0 0px 1000px $bg inset !important;
          -webkit-text-fill-color: $cursor !important;
        }
      }
    }

    .el-form-item {
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(255, 255, 255);
      border-radius: 5px;
      color: #454545;
      margin-bottom: 30px;
    }

    .el-form-item__error {
      color: #fff;
      font-size: 18px;
    }

    .login_btn {
      background: #407ffe;
      border: none;
      height: 64px;
      line-height: 32px;
      font-size: 18px;
    }
  }
</style>

<style lang="scss" scoped>
  $bg: #2d3a4b;
  $dark_gray: #889aa4;
  $light_gray: #eee;

  .login-container {
    min-height: 100%;
    width: 100%;
    background-color: $bg;
    overflow: hidden;

    .login-form {
      position: relative;
      width: 520px;
      max-width: 100%;
      padding: 160px 35px 0;
      margin: 0 auto;
      overflow: hidden;
    }

    .tips {
      font-size: 16px;
      color: #fff;
      margin-bottom: 10px;

      span {
        &:first-of-type {
          margin-right: 16px;
        }
      }
    }

    .svg-container {
      padding: 6px 5px 6px 15px;
      color: $dark_gray;
      vertical-align: middle;
      width: 30px;
      display: inline-block;
    }

    .title-container {
      position: relative;

      .title {
        font-size: 26px;
        color: $light_gray;
        margin: 0px auto 40px auto;
        text-align: center;
        font-weight: bold;
      }
    }

    .show-pwd {
      position: absolute;
      right: 10px;
      top: 7px;
      font-size: 16px;
      color: $dark_gray;
      cursor: pointer;
      user-select: none;
    }
  }
</style>